CN2667759Y - Flameproof electric cable tunnel - Google Patents
Flameproof electric cable tunnel Download PDFInfo
- Publication number
- CN2667759Y CN2667759Y CN 200320105152 CN200320105152U CN2667759Y CN 2667759 Y CN2667759 Y CN 2667759Y CN 200320105152 CN200320105152 CN 200320105152 CN 200320105152 U CN200320105152 U CN 200320105152U CN 2667759 Y CN2667759 Y CN 2667759Y
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- CN
- China
- Prior art keywords
- cable
- tunnel
- fire
- cable tunnel
- utility
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The utility model discloses a fireproofing cable tunnel which is characterized in that: the two side walls of the concrete tunnel are filled with paralleled cable brackets(4), the ground of the tunnel is provided with cable grooves(6) that is provided with a cover board(5) above and gutters(7). Sands(2) are spread in the cable brackets and the grooves to bury the cable(1). The cable tunnel has the advantages of simple structure, easy operation and installing, low manufacturing cost, low running cost, long service life, reliable fire proof property and pollution free.
Description
One, technical field
The utility model relates to the installation of cable, particularly a kind of cable tunnel that is used for cabling and has fire protecting performance.
Two, background technology
At present, no matter China is the cable tunnel that urban electricity supply or factories and miness power supply station are used for cabling, all is to set up steel cable bearer or crane span structure along the both sides, tunnel in the tunnel space of xoncrete structure, then with cable laying on support or crane span structure.Development along with electric utility, the formation of production-scale expansion, particularly big electrical network, big unit and high-power station are constructed and put into operation in succession, the use of various cables constantly increases, the number of cables of laying in the tunnel is more and more, is directly exposed to system of laying in the tunnel air with this cable, as wherein a cable is on fire, other cable can and then prolong combustion, cause the intensity of a fire to spread very soon along the tunnel, because tunnel ventilation is better, any fire-fighting equipment is all restive to big fire.Simultaneously, during ignition of cable, its polyvinyl chloride crust at high temperature can decomposite the poisonous hydrogen chloride of human body and so on gas, causes difficulty more for the work of putting out a fire to save life and property.Cause that as fire hydrogen chloride gas pours in the power plant or electric substation that links to each other with the tunnel, also can on its electric equipment, cause hcl corrosion, destroy the insulation property of equipment, and then influence the safe operation of equipment.According to incomplete statistics in domestic nearly 40 years, cable fire accident accumulative total took place and surpasses 200 in the whole nation, almost relate to all electricity consumption industries, and the cable tunnel fire accounts for significant proportion.Only 1985---in the period of 1991 five, 64 of cable fire accidents just take place in national electric power system, cause nearly 1,000,000,000 yuan of direct economic loss.
For reducing the tunnel cable fire incident, the fire prevention measure of taking in cable design at present mainly is at cable outside coating fireproof paint or wrapped fire prevention band, and the pyrotechnics of also installing in the tunnel that has detects and the self-extinguishing facility automatically.Wherein brushing fireproof paint or wrapped fire prevention band can discharge the chemical gas poisonous to human body, cause air pollution in the tunnel; And this coating and band will wear out after several years and come off and lose fire protecting performance.Pyrotechnics detects automatically and the self-extinguishing facility not only takies tunnel space and install in the tunnel, makes constructing operation inconvenience, but also the overall cost in tunnel and operating cost are greatly improved; Simultaneously, thus the kind equipment complexity, the malfunctioning regular meeting of link causes whole fire extinguishing system to lose efficacy, and its fire protecting performance is reliable inadequately.
In addition, because of high humidity in the cable tunnel, its steel cable bearer was corroded in this environment midium or long term, and useful life is limited.
Three, utility model content
The purpose of this utility model be at the problem that above-mentioned prior art exists provide a kind of simple in structure, installation is easy, cost and operating cost is low, long service life, pollution-free, the reliable fireproof cable of fire protecting performance tunnel.
Steel cable bearer and the crane span structure in the above-mentioned existing cable tunnel cancelled in the fireproof cable tunnel that the utility model provides, the substitute is cast cable bracket arranged side by side up and down on the two side of concrete tunnel, on the ground in tunnel, offer cable trench and gutter that top adds cover plate, in cable bracket and groove, lay the sand that is used for buried cable.
The utility model cable tunnel forms cable bracket and groove when concrete is poured into a mould simultaneously.During with its cabling, cable is placed bracket and groove respectively, treat to use the sand buried cable after wireline test and the acceptance(check), make cable and air isolated, isolate with sand each other.
The utility model cable tunnel is compared with above-mentioned prior art, its advantage one be because of sand itself be a kind of good fire proofing material, event is in operation by the cable of sand encirclement secluding air and can catch fire because of faults such as phase fault, ground connection, cable heating or insulation damages take place, even other position catches fire in the tunnel, the intensity of a fire can not prolonged combustion yet in cable, so the fire protecting performance of this cable tunnel is extremely reliable.The 2nd, this cable tunnel is because simple in structure, and installation and construction are extremely easy.The 3rd, be common concrete and sand because of building the used material in whole tunnel, and the tunnel need not safeguard substantially, the cost in tunnel and operating cost are greatly reduced.The 4th, the each several part in whole tunnel all is an xoncrete structure, is not afraid of humidity and corrosion; There is not problem of aging in the fire prevention sand yet, but therefore this cable tunnel uses indefinite duration.The 5th, do not discharge the material of poisonous chemical gas in the tunnel, there is not environmental pollution, be a kind of " green fireproof cable tunnel ", can guarantee to enter attendant healthy and safe in tunnel.The 6th, owing to cancelled metallic support and other fire equipment in the tunnel, reduced space hold, the tunnel is spacious and well-lighted, ventilates the convenient construction operation.
Four, description of drawings
Accompanying drawing is the cross-sectional view in the utility model fireproof cable tunnel.
Five, embodiment
In conjunction with the accompanying drawings, the utility model fireproof cable tunnel adopts the armored concrete one-time cast-forming.On the two side in tunnel, water side by side from top to bottom and outpour many row's cable brackets 4, outpour a cable trench 6 and a gutter 7 respectively on the ground in tunnel, cabling 1 in cable bracket and groove, and cable is buried and mutually isolate with free of contamination thin river sand 2, cable trench top adds cover plate 5, for construction and attendant's walking.For cable branch is drawn neatly, can on the inwall of each cable bracket, establish cable branch hole 3 (cable branch is drawn the position should be near equipment, and on the cable of drawing brushing fireproof paint or bag fire guard).
Claims (2)
1, a kind of fireproof cable tunnel, it is characterized in that: cast cable bracket (4) arranged side by side up and down on the two side of concrete tunnel, on the ground in tunnel, offer cable trench (6) and gutter (7) that top adds cover plate (5), in said cable bracket and groove, lay the sand (2) that is used for buried cable (1).
2, as the said fireproof cable of claim 1 tunnel, it is characterized in that: on the inwall of said cable bracket (4), be provided with cable branch hole (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320105152 CN2667759Y (en) | 2003-11-03 | 2003-11-03 | Flameproof electric cable tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320105152 CN2667759Y (en) | 2003-11-03 | 2003-11-03 | Flameproof electric cable tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2667759Y true CN2667759Y (en) | 2004-12-29 |
Family
ID=34341127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320105152 Expired - Fee Related CN2667759Y (en) | 2003-11-03 | 2003-11-03 | Flameproof electric cable tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2667759Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738753A (en) * | 2011-04-07 | 2012-10-17 | 上海市电力公司 | Single-layer double-side cable combination structure used in 220KV transformer station |
| CN102738752A (en) * | 2011-04-07 | 2012-10-17 | 上海市电力公司 | Cable combination structure of power tunnel matched with transformer station |
| CN102738755A (en) * | 2011-04-07 | 2012-10-17 | 上海市电力公司 | Cable layout structure of 220KV outgoing line tunnel |
| CN102738756A (en) * | 2011-04-07 | 2012-10-17 | 上海市电力公司 | Cable combination structure of 500KV main tunnel of power supply output terminal |
| CN102738754A (en) * | 2011-04-07 | 2012-10-17 | 上海市电力公司 | Cable combination structure of power tunnel matched with 220KV transformer station |
| CN102733818A (en) * | 2012-07-24 | 2012-10-17 | 马放 | Underground high-voltage power transmission cable anti-radiation tunnel |
| CN102738751A (en) * | 2011-04-07 | 2012-10-17 | 上海市电力公司 | Single-layer cable combination structure of power tunnel used for 500KV transformer station |
| CN103821525A (en) * | 2014-03-10 | 2014-05-28 | 山西太钢不锈钢股份有限公司 | Cable tunnel rapid construction method in high water level geological condition |
| CN106861089A (en) * | 2017-03-17 | 2017-06-20 | 成都格瑞思文化传播有限公司 | A kind of electric power fire-fighting tunnel |
| CN107450143A (en) * | 2017-08-08 | 2017-12-08 | 吉林吉大通信设计院股份有限公司 | A kind of subterranean communications optic fiber cable ditch |
| CN108035770A (en) * | 2017-12-10 | 2018-05-15 | 成都隶盈科技有限公司 | A kind of power tunnel construction method |
-
2003
- 2003-11-03 CN CN 200320105152 patent/CN2667759Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738751A (en) * | 2011-04-07 | 2012-10-17 | 上海市电力公司 | Single-layer cable combination structure of power tunnel used for 500KV transformer station |
| CN102738752A (en) * | 2011-04-07 | 2012-10-17 | 上海市电力公司 | Cable combination structure of power tunnel matched with transformer station |
| CN102738755A (en) * | 2011-04-07 | 2012-10-17 | 上海市电力公司 | Cable layout structure of 220KV outgoing line tunnel |
| CN102738756A (en) * | 2011-04-07 | 2012-10-17 | 上海市电力公司 | Cable combination structure of 500KV main tunnel of power supply output terminal |
| CN102738754A (en) * | 2011-04-07 | 2012-10-17 | 上海市电力公司 | Cable combination structure of power tunnel matched with 220KV transformer station |
| CN102738753A (en) * | 2011-04-07 | 2012-10-17 | 上海市电力公司 | Single-layer double-side cable combination structure used in 220KV transformer station |
| CN102738752B (en) * | 2011-04-07 | 2015-08-05 | 上海市电力公司 | The cable composite structure of the supporting electric power tunnel of a kind of transformer station |
| CN102733818A (en) * | 2012-07-24 | 2012-10-17 | 马放 | Underground high-voltage power transmission cable anti-radiation tunnel |
| CN103821525A (en) * | 2014-03-10 | 2014-05-28 | 山西太钢不锈钢股份有限公司 | Cable tunnel rapid construction method in high water level geological condition |
| CN103821525B (en) * | 2014-03-10 | 2015-10-28 | 山西太钢不锈钢股份有限公司 | Cable tunnel rapid constructing method under high water level geological conditions |
| CN106861089A (en) * | 2017-03-17 | 2017-06-20 | 成都格瑞思文化传播有限公司 | A kind of electric power fire-fighting tunnel |
| CN107450143A (en) * | 2017-08-08 | 2017-12-08 | 吉林吉大通信设计院股份有限公司 | A kind of subterranean communications optic fiber cable ditch |
| CN108035770A (en) * | 2017-12-10 | 2018-05-15 | 成都隶盈科技有限公司 | A kind of power tunnel construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |